# Rolls-Royce 501-D22A - Type: Engine model (FAA registry) - Registry code: 54159 - Manufacturer (registry): ROLLS-ROYC - Model: 501-D22A - Engine type: Turbo-prop - Power: 4,680 hp - Data sheet: [TCDS E-282](https://openairdocs.org/tcds/E-282) (OpenAirDocs) - Holder: Rolls-Royce Corporation - Installed in: 0 registered aircraft - Page: https://openairdocs.org/engine/rolls-royce-501-d22a Model codes come from the FAA registry's reference file. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2006-25-12](https://openairdocs.org/ad/2006-25-12): Removal from service of certain turbine rotor components · Rolls-Royce 501-D13, 501-D13A, 501-D13D and 6 more. Effective Jan 23, 2007 - [AD 2005-22-03](https://openairdocs.org/ad/2005-22-03): 1st stage, 2nd stage, 3rd stage, and 4th stage turbine wheels · Rolls-Royce 501-D22A, 501-D22C and 501-D22G. Effective Nov 29, 2005 - [AD 75-07-06](https://openairdocs.org/ad/75-07-06): Second Stage Turbine Blades · Rolls-Royce 501-D22A. Effective Apr 7, 1975 - [AD 69-21-03](https://openairdocs.org/ad/69-21-03): First Stage Compressor Wheels · Rolls-Royce 501-D13, 501-D13A, 501-D13D and 6 more. Effective Oct 21, 1969 Historical (superseded or no longer in force): - [AD 2003-07-02](https://openairdocs.org/ad/2003-07-02) (historical): Turbine rotor components · 501-D13, 501-D13A, 501-D13D and 6 more. Effective May 7, 2003 ## Registered aircraft None registered with this engine model now. ## NTSB investigations None matched to aircraft with this engine model. ## FAA accident and incident reports None matched to aircraft with this engine model. ## Service difficulty reports (231, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR LR7A2024031203363](https://openairdocs.org/sdr/LR7A2024031203363), Mar 12, 2024: ENGINE. FLAMED OUT. DURING SCHEDULED FLIGHT #3 ENGINE FLAMED OUT. SUBSEQUENT INSPECTION FOUND FOD DAMAGE. / REPLACED #3 ENGINE. IAW HN71136. LOG PAGE 52379 - [SDR 2021FA0000401](https://openairdocs.org/sdr/2021FA0000401), Dec 16, 2021: FUEL NOZZLE. NO TEST. ON MONDAY AFTERNOON, DEC. 13TH DURING THE START OF AN ENGINE FUNCTIONAL TEST, THE ENGINE FAILED TO LIGHT OFF. DURING TROUBLESHOOTING IT WAS FOUND THAT THE FUEL - [SDR LR7A2020120802646](https://openairdocs.org/sdr/LR7A2020120802646), Dec 8, 2020: HOUSING. LEAKING. DURING SCHEDULED FLIGHT NR 1 ENGINE LOW PROP OIL LIGHT ILLUMINATED. ENGINE SHUT DOWN. EMERGENCY DECLARED. RESEALED NR 1 PROP PUMP HOUSING. - [SDR LR7A2019120302215](https://openairdocs.org/sdr/LR7A2019120302215), Nov 30, 2019: HOUSING. FAILED. DURING SCHEDULED FLIGHT WHILE IN CLIMB #1 ENGINE FLAMEOUT AT 1859. / REMOVED AND REPLACED #1 PROP VALVE HOUSING REF HN 61135 - LEAK AND OPS CHECK GOOD REF HN710 - [SDR LR7A2018082421420](https://openairdocs.org/sdr/LR7A2018082421420), Aug 22, 2018: LINE. LOOSE. DURING SCHEDULED FLIGHT, PULLED THROTTLES BACK TO NEAR ZERO, ZERO TORQUE, NR 4 ENGINE FLAMED OUT. TIGHTENED LINES AT SPEED SENSE VALVE AND FILTER. OPS CHECKED G - [SDR LR7A20180515379](https://openairdocs.org/sdr/LR7A20180515379), May 11, 2018: ENGINE. OVERSPEED. DURING SCHEDULED FLIGHT, THE NR 3 ENGINE OVERSPEED OF APPROXIMATELY 106% WHEN BLEEDS WERE TURNED ON AT 1000 FEET. ENGINE WAS SHUTDOWN IAW ESP. INSPECTED AND CLE - [SDR LR7A2015090900607](https://openairdocs.org/sdr/LR7A2015090900607), Sep 9, 2015: HOUSING. DAMAGED. DURING DESCENT, NR 4 ENGINE FLAMED OUT. SHUTDOWN IAW QRH PROCEDURES. R & R VALVE HOUSING ASSY. - [SDR LR7A2014121600505](https://openairdocs.org/sdr/LR7A2014121600505), Dec 14, 2014: PLENUM. CRACKED. DURING SCHEDULED B-3 CHECK, UNDER JOB CARD HB5701, FOUND NR4 ENGINE'S LOWER AFT NACELLE PLENUM HAD CRACKED ON THE INBD SIDE; FS536, PPWL0 TO PPWL-6, PPBL8.4L TO - [SDR CA150118001](https://openairdocs.org/sdr/CA150118001), Dec 11, 2014: LONGERON. CRACKED. (CAN) DURRING ROUTINE B CHECK INSPECTION , CRACK WAS FOUND ON SLOPING LONGERON AT BS 869 LT SIDE. LONGERON WAS REPLACED AIRCRAFT WAS RETURNED TO SERVICE. - [SDR CA140716003](https://openairdocs.org/sdr/CA140716003), Jul 9, 2014: BEARING. FAILED. (CAN) DURING ENGINE GROUND RUN TO TROUBLESHOOT A PROPELLER SYNCHROPHASER DEFECT, THE NR 3 THROTTLE JAMMED AS IT WAS BEING RETARDED BELOW CROSSOVER. THE ENGINE W - [SDR LR7A2014053100730](https://openairdocs.org/sdr/LR7A2014053100730), May 31, 2014: RETAINER. CRACKED. DURING SCHEDULED B-2 CHECK, FOUND NR 2 ENGINE QEC FIRESEAL RETAINER & ANGLE BROKEN ON LOWER LT SIDE OF FIREWALL, REPAIRED IAW MEA 382-71-14-012. - [SDR CA131203001](https://openairdocs.org/sdr/CA131203001), Oct 4, 2013: SPAR CAP. CORRODED. (CAN) HORIZONTAL STABILIZER FWD UPPER SPAR CAP FROM BL 61 TO BL 70 HAS TOOLING MARKS AT FASTENER LOCATIONS. WORK CARRIED OUT IAW RESPONSE BAD70001-2013-000007 A - [SDR CA130308004](https://openairdocs.org/sdr/CA130308004), Mar 6, 2013: BEAM. CRACKED. (CAN) THE ACFT WAS OPERATING AND WHILE ON THE RETURN TRIP THE CREW REPORTED HEARING A LOUD BANG IN THE CARGO SECTION FOLLOWED BY THE INABILITY TO MAINTAIN CABIN - [SDR CA130123009](https://openairdocs.org/sdr/CA130123009), Jan 4, 2013: COLLAR. CORRODED. (CAN) FORWARD NLG UPPER CYLINDER STEERING COLLAR WAS DIFFICULT TO RETURN DURING GROUND HANDLING. UPON INVESTIGATION THE STEERING COLLAR WAS DISPLACED AND CORROS - [SDR LR7A2012121900428](https://openairdocs.org/sdr/LR7A2012121900428), Dec 19, 2012: HOUSING. FAILED. DURING DESCENT, NR 1 ENGINE FLAMED OUT, THEN RELIT, FOLLOWED BY 105 PERCENT RPM SHUTDOWN IAW QRH PROCEEDURES. R & R VALVE HOUSING ASSY IAW HN61135 LP 38080. - [SDR CA121029008](https://openairdocs.org/sdr/CA121029008), Oct 5, 2012: BEAM. CRACKED. (CAN) DURING ROUTINE INSPECTION, RT MLG BEAM AT BS 517, WL 214, WAS FOUND CRACKED. PN 388394-2, BEAM CAP WAS REPLACED WITH NEW PART IAW SMP 583, CHAPTER 51-60 A - [SDR CA120905001](https://openairdocs.org/sdr/CA120905001), Sep 1, 2012: HOSE. RUPTURED. (CAN) THE FLIGHT REPORTED A HYDRAULIC ISSUE SHORTLY AFTER TAKEOFF AND RETURNED TO DEPARTING STATION FOR REPAIRS. MAINTENANCE PERSONNEL FOUND THE NOSE GEAR ACTUA - [SDR LR7A2012082500395](https://openairdocs.org/sdr/LR7A2012082500395), Aug 25, 2012: CONTROL UNIT. FAULTY. DURING CRUISE FLIGHT NR 1 ENGINE FIRE LIGHT ILLUMINATED, SHUTDOWN NR 1 ENGINE. INSPECTED ENGINE FOR EVIDENCE OF FIRE OR BLEED AIR LEAKAGE, REPLACED NR 1 FIRE CO - [SDR LR7A2012081400389](https://openairdocs.org/sdr/LR7A2012081400389), Aug 14, 2012: SKIN. DENTED. DENT RT AFT FUSELAGE, FS 800, WL 146, RBL 64. REPAIRED RT AFT FUSELAGE SKIN IAW SMP 583, FIGURE 51-140-12. - [SDR LR7A2012081300390](https://openairdocs.org/sdr/LR7A2012081300390), Aug 13, 2012: BULKHEAD WEB. CRACKED. DURING SCHEDULED B-1 INSPECTION, FOUND NLG WHEEL WELL BULKHEAD WEB CRACKED AT FS165, RBL70, WL171. REPAIR ACCOMPLISHED IAW SMP 583, FIG 51-140-17, NR 2-5-2. - [SDR LR7A2012081300391](https://openairdocs.org/sdr/LR7A2012081300391), Aug 13, 2012: WEB. CRACKED. DURING SCHEDULED B-1 INSPECTION, FOUND RT AFT BULKHEAD WEB CRACKED AT FS 880, RBL 63. REPAIR ACCOMPLISHED BY REPLACEMENT IAW SMP583, 51-60 AND 51-70. - [SDR LR7A2012081300392](https://openairdocs.org/sdr/LR7A2012081300392), Aug 13, 2012: STRUCTURE. GOUGED. DURING SCHEDULED B-1 INSPECTION, FOUND LT SLOPING LONGERON GOUGED AT FS 859, LBL 61.62. REPAIR ACCOMPLISHED IAW LAC MEA 382-53-12-088. - [SDR LR7A2012081300393](https://openairdocs.org/sdr/LR7A2012081300393), Aug 13, 2012: BULKHEAD. CRACKED. DURING SCHEDULED B-1 INSPECTION, FOUND LT AFT BULKHEAD CAP CRACK AT FS902, LBL63. REPAIR ACCOMPLISHED BY REPLACEMENT IAW SMP583, CH 51-6 AND 51-70. - [SDR LR7A2012081300394](https://openairdocs.org/sdr/LR7A2012081300394), Aug 13, 2012: SKIN. CRACKED. DURING SCHEDULED B-1 INSPECTION, FOUND RT HORIZONTAL STABILZER UPPER SKIN CRACKED BETWEEN RIVETS FS 1041, HSS61, WL285. REPAIR ACCOMPLISHED IAW MEA 382-55-12-08 - [SDR LR7A2012073100388](https://openairdocs.org/sdr/LR7A2012073100388), Jul 28, 2012: JACKSCREW. SEIZED. FLAPS STUCK AT 15 PERCENT LANDING WAS UNEVENTFUL. R & R NR 7 JACKSCREW IAW SMP 581 27-50-11. - [SDR CA130115008](https://openairdocs.org/sdr/CA130115008), Apr 26, 2012: BEARING. SPALLED. (CAN) DURING APPROACH THE PROPELLER SPEED DROPPED BELOW LIMITS. ENGINE WAS SHUTDOWN AND ACFT LANDED SAFELY. MAINTENANCE REPLACED THE PROPELLER VALVE HOUSING AND - [SDR CA120320001](https://openairdocs.org/sdr/CA120320001), Mar 5, 2012: SKIN. LOOSE. (CAN) IN C-CHECK, WHILE PERFORMING OUTGOING PRESSURIZATION/DECAY RATE CHECK THE ACFT PRODUCTION JOINT AT FUSELAGE STATION 245, LEFT HAND, BETWEEN WL 190 AND WL - [SDR LR7A2012020200352](https://openairdocs.org/sdr/LR7A2012020200352), Jan 5, 2012: HOUSING. WORN. DURING DESCENT NR 1 ENGINE RPM LOSS FOLLOWED BY FLAMEOUT. SHUTDOWN ENGINE. REPLACED NR 1 VALVE HOUSING IAW LAC HN 61135, LP 35212. - [SDR CA110614009](https://openairdocs.org/sdr/CA110614009), Jun 12, 2011: DUCT. RUPTURED. SHORTLY AFTER DEPARTURE THE CREW ADVISED THAT THEY HAD SHUTDOWN THE NR 3 ENGINE DUE TO AN OVERHEAT WARNING LIGHT AND THAT THEY WERE RETURNING TO POINT OF DEPART - [SDR LR7A2010122800161](https://openairdocs.org/sdr/LR7A2010122800161), Dec 22, 2010: SKIN. CORRODED. DURING SCHEDULED B-3, CHECK IAW JOB CARD HB2106 FOUND ACCESS PANEL CUT-OUT DOUBLER CORRODED AT FS477, BL0, WL126. REPLACED DOUBLER IAW SRM SMP583 CH 51-60 AND 5 - [SDR LR7A2010122800162](https://openairdocs.org/sdr/LR7A2010122800162), Dec 22, 2010: REINFORCEMENT. CRACKED. DURING SCHEDULED B-3 CHECK, IAW JOB CARD HB3200, FOUND "SUSPECTED CRACK" IN RADIUS OF THE RT MLG BEAM LOWER REINFORCEMENT PLATE AT FS588, WL146, RBL62. REPLACED - [SDR LR7A2010122800163](https://openairdocs.org/sdr/LR7A2010122800163), Dec 22, 2010: ANGLE. CRACKED. DURING SCHEDULED B-3 CHECK IAW JOB CARD HB3200. FOUND CRACK IN LT UPPER WHEEL WELL BEAM CAP ANGLE AT FS 528, WL 210, LBL 63. REPLACED WITH NEW IAW SRM SMP583 CH - [SDR LR7A2010122800164](https://openairdocs.org/sdr/LR7A2010122800164), Dec 22, 2010: ANGLE. CRACKED. DURING SCHEDULED B-3 CHECK IAW JOBCARD HB3200 FOUND CRACK IN RT UPPER WHEEL WELL BEAM CAP ANGLE AT FS528, WL210, RBL63. REPLACED WITH NEW IAW SRM SMP583 CH 51-6 - [SDR CA101015012](https://openairdocs.org/sdr/CA101015012), Oct 15, 2010: LONGERON. DAMAGED. 2 INDICATING HOLES FOUND AT THE NR 4 QEC LONGERON AT THE OTBD LONGERON AT THE INBD AFT HOLE AND THE INBD LONGERON AT THE INBD AFT HOLE. REPAIRED IAW SUPPLIED ER - [SDR CA101018005](https://openairdocs.org/sdr/CA101018005), Oct 14, 2010: SHAFT. FAILED. FLIGHT CREW REPORTED NR 4 ENGINE DRIVEN GENERATOR OUT, LIGHT ILLUMINATED AND WOULD NOT RESET, FIELD TRIPPED OFF. ACFT COMPLETED THE FLIGHT. GENERATOR WAS FOUND - [SDR CA100621014](https://openairdocs.org/sdr/CA100621014), Jun 18, 2010: ROTOR. BROKEN. LT AFT BRAKE ASSY FOUND TO BE UNSERVICEABLE UPON REMOVAL OF WHEEL ASSY. BROKEN PIECES OF BRAKE ROTOR WERE FOUND LODGED BETWEEN THE LAYERS, CAUSING DEFORMATION O - [SDR LR7A2010041400004](https://openairdocs.org/sdr/LR7A2010041400004), Apr 11, 2010: STANCHION. PUNCTURED. DURING LOADING FOUND .7500" HOLE IN RT STANCHION AT FS 793, RBL 62, WL 212. REPAIRED STANCHION IAW SRM SMP583 FIG 53-50-24. LOG PAGE: 31653 - [SDR CA091214010](https://openairdocs.org/sdr/CA091214010), Dec 13, 2009: HOUSING. MALFUNCTIONED. (CAN) CREW REPORTED THAT WHILE IN CRUISE FLIGHT, IT SEEMED LIKE THE NR 3 ENGINE OVERSPEEDED, THEN DE-COUPLED AND RE-COUPLED AGAIN. PROPELLER RPM READ 107 - 110 - [SDR CA091007007](https://openairdocs.org/sdr/CA091007007), Oct 4, 2009: BEAM. CRACKED. (CAN) CRACK WAS FOUND ON VISUAL INSP OF MLG WHEEL WELL INTIAL REPORT CRACK LOOKED 2 INCHES LONG FUTHER INVESTIGATION SHOWED CRACK MIGRATING TO MLG TRACK. REMOVA - [SDR LR7A2009100500129](https://openairdocs.org/sdr/LR7A2009100500129), Oct 2, 2009: ENGINE. FLAMED OUT. NR 2 ENG INFLIGHT SHUTDOWN DUE TO FLAMEOUT. NO OTHER INDICATIONS. 1302Z. ENG SHUTDOWN PROCEDURES COMPLIED WITH. ACFT FERRIED FOR REPAIR. REMOVED AND REPLACED NR - [SDR CA090914001](https://openairdocs.org/sdr/CA090914001), Sep 11, 2009: HOUSING. LEAKING. (CAN) SEPT 11/09 C-GHPW NR 1 RPM DROPPED 1% TO 99% IN CRUISE, FURTHER DROPPED TO 96%. PITCHLOCK CHECK CARRIED OUT OKAY. RPM CONTINUED TO SLOWLY DROP. AT 95% THE - [SDR CA090727002](https://openairdocs.org/sdr/CA090727002), Jul 23, 2009: SWITCH. FAULTY. (CAN) ACFT TAXIED TO POSITION, CREW NOTICED A STRONG ODOR AND REALIZED THAT SMOKE WAS COMING FROM AN OVERHEAD PANEL AT THE FLIGHT ENGINEERS STA. ACFT WAS SHUTDO - [SDR LR7A2009091900075](https://openairdocs.org/sdr/LR7A2009091900075), Jun 16, 2009: HOSE. SPLIT. ENGINE SHUTDOWN PROCEDURES PERFORMED AFTER NR 2 ENGINE FLAME OUT DURING CRUISE FLIGHT. MAINTENANCE FOUND RT 10TH STAGE BLEED VALVE HOSE SPLIT. HOSE REPLACED IAW - [SDR CA090513003](https://openairdocs.org/sdr/CA090513003), Apr 7, 2009: MOUNT. CORRODED. (CAN) AT INSPECTION THE NR 2 AND 3 POSITION OTBD LOWER ENGINE TRUSS MOUNTS WERE FOUND TO HAVE CORROSION PITTING BEYOND ACCEPTABLE LIMITS. THE UNITS WERE REPLACE - [SDR CA090227005](https://openairdocs.org/sdr/CA090227005), Feb 26, 2009: OIL SYSTEM. LEAKING. (CAN) ENROUTE, THE CREW OBSERVED A LOW OIL QUANTITY LIGHT ON NR 3 PROPELLER DURING THE DESCENT. THE ACFT WAS RETURNING TO POINT OF DEPARTURE WHEN APPROX 100 MIL - [SDR CA090210005](https://openairdocs.org/sdr/CA090210005), Feb 6, 2009: HOUSING. LEAKING. DEPARTING YZF THE CREW OBSERVED A LOW OIL INDICATION ON NR 3 PROPELLER IN THE CLIMB WITH NORMAL RPM. THE PROPELLER RPM INCREASED TO 103 PERCENT SHORTLY AFTER AN - [SDR CA090121002](https://openairdocs.org/sdr/CA090121002), Jan 19, 2009: WINDSCREEN. FAILED. (CAN) AFTER DEPARTING, THE ACFT SUFFERED A CENTER WINDSHIELD OUTER PANE FAILURE. THE CREW REDUCED CABIN PRESSURE AND THE ACFT RETURNED TO POINT OF DEPARTURE AND - [SDR CA090112014](https://openairdocs.org/sdr/CA090112014), Jan 9, 2009: SEAL. LEAKING. (CAN) SHORTLY AFTER DEPARTING YELLOWKNIFE, AT APPROXIMATELY 55 NAUTICAL NORTH THE CREW OBSERVED A NR 2 PROP LOW OIL INDICATION ILLUMINATED. THE CREW SHUT DOWN N - [SDR CA080811001](https://openairdocs.org/sdr/CA080811001), Jul 29, 2008: ALTERNATOR. FAILED. (CAN) ON DESCENT, CREW OBSERVED THE NR 2 GENERATOR FAIL WAS ILLUMINATED. THE NR2 ENGINE WAS SHUTDOWN AND THE ACFT RETURNED TO POINT OF DEPARTURE AND LANDED WITH - [SDR CA080729003](https://openairdocs.org/sdr/CA080729003), Jul 24, 2008: BOLT. FAILED. (CAN) ENROUTE, THE LOAD MASTER OBSERVED AN UNUSUAL SOUND FROM THE CARGO BAY AREA. UPON INVESTIGATION AN UNUSUAL GAP WAS NOTICED BETWEEN THE LANDING GEAR BAY WEB All 231: https://openairdocs.org/engine/rolls-royce-501-d22a/reports.md ## PMA parts (OpenAirDocs) (over 1,000, first 50) Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this engine model on its data sheet, so check the FAA record before relying on it. Newest first. - [211-326P](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125354605420260305135806.0001): Filter Element Assembly. Donaldson Company Inc · PMA PQ2432CE · Replaces 6873547, 6871805 · Mar 3, 2026 - [23071468P](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID154696035220251205185338.0001): Support,Turbine –Front Bearing. Pacific Sky Supply Inc · PMA PQ1255NM · Replaces 23071468 · Aug 5, 2025 - [6783872P](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID170886975520250404211601.0001): Shaft,Compressorextension. Pacific Sky Supply Inc · PMA PQ1255NM · Replaces 6783872 · Mar 26, 2025 - [6827848P](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID161394333120250404211602.0001): Gear Assy,CompressorExt Shaft &Side Gear. Pacific Sky Supply Inc · PMA PQ1255NM · Replaces 6827848 · Mar 26, 2025 - [6782685TT+.015](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID198849205620250102180403.0001): Plug, Oil Seal 0.750 Dia X 0.375 Long. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6782685+.015 · Jul 2, 2024 - [6782685TT+.005](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID198406910020250102180402.0001): Plug, Oil Seal 0.750 Dia X 0.375 Long. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6782685+.005 · Jul 2, 2024 - [6829392TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID197912735420250102180347.0001): Gear, Spur, Hydraulic Pump Idler Drive. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6829392 · Jul 2, 2024 - [6824041TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID197900864320250102180355.0001): Gear, Spur, Tachometer Drive Takeoff. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6824041 · Jul 2, 2024 - [6887148TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID192560985520250102180354.0001): Flange, Starter Shaft Bearing. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6887148 · Jul 2, 2024 - [6829390TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID192550115520250102180348.0001): Gear, Spur, Hydraulic Pump Drive. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6829390 · Jul 2, 2024 - [23056999TT-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191334320720250102180343.0001): Roller Sets, Spherical Planet Bearing. Turbo Technologies LLC · PMA PQ2318NM · Replaces 23056999-1 · Jul 2, 2024 - [23053857TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191250019320250102180349.0001): Seal, Labyrinth, Rotating, Compressor Rear Primary. Turbo Technologies LLC · PMA PQ2318NM · Replaces 23053857 · Jul 2, 2024 - [6829393TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID190929031620250102180353.0001): Gear, Spur, Alternator Drive. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6829393 · Jul 2, 2024 - [6876478TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID186592623820250102180351.0001): Shaft gear, Spur-Pump Drive. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6876478 · Jul 2, 2024 - [6824043TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID186387820320250102180342.0001): Gear, Spur, Tachometer & Oil Pump Drive. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6824043 · Jul 2, 2024 - [6829896TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182232096120250102180350.0001): Pin, Reduction Gear, Eyebolt. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6829896 · Jul 2, 2024 - [6846747TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181477636120250102180347.0001): Shaft Assembly, Drive Tachometer. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6846747 · Jul 2, 2024 - [23056999TT-6](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181362804820250102180344.0001): Roller Sets, Spherical Planet. Turbo Technologies LLC · PMA PQ2318NM · Replaces 23056999-6 · Jul 2, 2024 - [6845748TT-43](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181267883820250102180351.0001): Gear, Spur-Starter. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6845748-43 · Jul 2, 2024 - [6782685TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180695100120250102180402.0001): Plug, Oil Seal 0.750 Dia X 0.375 Long. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6782685 · Jul 2, 2024 - [23056999TT-5](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID179894934920250102180344.0001): Roller Sets, Spherical Planet. Turbo Technologies LLC · PMA PQ2318NM · Replaces 23056999-5 · Jul 2, 2024 - [23003504TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID179432922220250102180357.0001): Cuplock, Retention- Prop Shaft Thrust Nut Lock. Turbo Technologies LLC · PMA PQ2318NM · Replaces 23003504 · Jul 2, 2024 - [6829396TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178937992820250102180341.0001): Gear, Spur-Main Accessory Drive. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6829396 · Jul 2, 2024 - [23056999TT-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178137725220250102180344.0001): Roller Sets, Spherical Planet. Turbo Technologies LLC · PMA PQ2318NM · Replaces 23056999-4 · Jul 2, 2024 - [6787342TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169804341620250102180347.0001): Shaft Gear, .250 Square Drive. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6787342 · Jul 2, 2024 - [6845945TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167884631120250102180348.0001): Bolt, Tie, Compressor. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6845945 · Jul 2, 2024 - [6794722TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID162311378320250102180349.0001): Seal, Labyrinth, Rotating, Compressor Rear Primary. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6794722 · Jul 2, 2024 - [6824044TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID161475209220250102180340.0001): Gear, Spur, Pump Drive Idler. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6824044 · Jul 2, 2024 - [6792040TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID156471217520250102180354.0001): Cone, Inner Prop Brake. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6792040 · Jul 2, 2024 - [6782685TT+.010](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID155625825720250102180402.0001): Plug, Oil Seal 0.750 Dia X 0.375 Long. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6782685+.010 · Jul 2, 2024 - [6829398TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID153770119120250102180359.0001): Gear, Spur, Scavenge Pump Drive. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6829398 · Jul 2, 2024 - [6875243TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID150569088620250102180359.0001): Blade, Turbine, 3rd Stage. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6875243 · Jul 2, 2024 - [6788225TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID146424434220250102180402.0001): Gear, Scavenge Pump Drive Pinion. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6788225 · Jul 2, 2024 - [23056999TT-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID142633724520250102180344.0001): Roller Sets, Spherical Planet. Turbo Technologies LLC · PMA PQ2318NM · Replaces 23056999-3 · Jul 2, 2024 - [6738444TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID141092233620250102180401.0001): Shaft, Accessory Idler Gear. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6738444 · Jul 2, 2024 - [6782685TT+.020](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID140723593320250102180403.0001): Plug, Oil Seal 0.750 Dia X 0.375 Long. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6782685+.020 · Jul 2, 2024 - [6829670TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135080996620250102180357.0001): Member, Safety Coupling-Outer. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6829670 · Jul 2, 2024 - [6842119TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID132726204520250102180348.0001): Member, Safety Coupling-Intermediate. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6842119 · Jul 2, 2024 - [6899778TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID132096137820250102180346.0001): Ferrule, Crossover. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6899778 · Jul 2, 2024 - [6824214TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID131692517420250102180358.0001): Gear, Spur, Tachometer Drive Idler. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6824214 · Jul 2, 2024 - [23055550TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID131197886320250102180343.0001): Gear and Bearing Assembly, Planet. Turbo Technologies LLC · PMA PQ2318NM · Replaces 23055550 · Jul 2, 2024 - [6787344TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129001373420250102180351.0001): Shaftgear, Accessory Drive Side. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6787344 · Jul 2, 2024 - [19144TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID127898217820250102180352.0001): Plug, Oil Seal .750 Dia X .375 Long. Turbo Technologies LLC · PMA PQ2318NM · Replaces 19144 · Jul 2, 2024 - [6782790TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID127765451720250102180401.0001): Shaft, Assembly, Slide Accessory Drive. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6782790 · Jul 2, 2024 - [19144TT+.010](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID126082651420250102180352.0001): Plug, Oil Seal .750 Dia X .375 Long. Turbo Technologies LLC · PMA PQ2318NM · Replaces 19144 +.010 · Jul 2, 2024 - [18326TT+.010](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125385565920250102180348.0001): Plug-Oil Seal 3/8 Dia x 5/16 Long (& Oversize). Turbo Technologies LLC · PMA PQ2318NM · Replaces 18326+.010 · Jul 2, 2024 - [19144TT+.015](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125215568720250102180353.0001): Plug, Oil Seal .750 Dia X .375 Long. Turbo Technologies LLC · PMA PQ2318NM · Replaces 19144 +.015 · Jul 2, 2024 - [6846363TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID124255735120250102180400.0001): Gear, Spur, Main Idler. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6846363 · Jul 2, 2024 - [6846518TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID123680557720250102180345.0001): Ferrule, Fuel Nozzle. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6846518 · Jul 2, 2024 - [6780888TT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID123230183820250102180342.0001): Bushing, 1.240 I.D. x 1.509 O.D. x .552 Long, Flanged. Turbo Technologies LLC · PMA PQ2318NM · Replaces 6780888 · Jul 2, 2024 All of them: https://openairdocs.org/engine/rolls-royce-501-d22a/pma.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.